Call Method When New Process Started/Ended

[developeralp]

Hello all,

How can i detect to new process start ?

i.e :

-my application running.
-firefox.exe started
-my.application prints a new line "firefox.exe started !"
-firefox.exe closed
-my.application prints another new line "firefox.exe closed."

I was detecting a process start with that code in c# ;

new ManagementEventWatcher("SELECT * FROM Win32_ProcessStartTrace");

How can i do that in python with psutil ?

[giampaolo]

You could iterate over all processes, looking for process name:

import psutil

PROCNAME = "firefox.exe"

for proc in psutil.process_iter():
    if proc.name() == PROCNAME:
         print "found"

To check when it's closed you could call is_running ever X secs:

while 1:
        if not proc.is_running():
              print "it's gone"
              break
        time.sleep(1)